B1046 on Jeep: How to Diagnose & Fix
Occupant Classification / Restraint Sensor Circuit Fault
1 Jeep model · 1 documented issue · 1 critical · $350-$1,400 repair
B1046 on Jeep by model: symptoms, diagnosis and fix
The Grand Wagoneer's power cinch tailgate latch mechanism, which uses an electric motor to fully close and seal the rear liftgate, has been reported to fail in both directions — either not cinching closed or not releasing when the open button is pressed. The electric cinch latch assembly can develop motor failures or the latch pawl can bind, leaving owners unable to open or securely close the tailgate. Multiple NHTSA complaints reference the tailgate appearing closed but unlatching while driving.
Common Symptoms
- Tailgate will not fully close or cinch shut
- Tailgate opens unexpectedly while driving
- Power liftgate button unresponsive to open or close command
- Grinding noise from tailgate latch area during operation
- Warning chime and 'Liftgate Open' message while gate appears closed
How to Fix
Replace the power cinch latch assembly on the tailgate with updated Mopar latch unit (part referenced in TSB coverage for WS-platform liftgate). Inspect and lubricate latch striker alignment before replacement, as misalignment causes premature latch motor wear. Dealers have performed this under warranty on affected vehicles.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Genuine Mopar 68364385AE liftgate latch/lock actuatorOEMMopar 68364385AE
Liftgate latch/actuator replacement after electrical, alignment and obstruction checks confirm the latch assembly failed Fitment/availability: 2022-2025 Jeep Grand Wagoneer 3.0L or 6.4L liftgate latch. Confirm VIN/current supersession; n…
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B1046 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does B1046 mean on a Jeep?
B1046 stands for "Occupant Classification / Restraint Sensor Circuit Fault." B1046 is a manufacturer-specific body code most commonly associated with the supplemental restraint (airbag) system, typically a fault in the occupant classification system (passenger seat weight/presence sensing) or a related restraint sensor unit. The airbag control module has detected a sensor or circuit reading outside its expected range. Because this is a safety-restraint code, the airbag warning light is usually on and passenger airbag deployment behavior may be affected. Exact meaning varies by maker, so confirm with vehicle-specific data. On Jeep it is documented across 1 model: Grand Wagoneer.
What are the most common causes of B1046?
The most common causes of B1046 are: Faulty passenger seat occupant weight/classification sensor, Damaged wiring or connector under the seat, Faulty airbag/restraint control (sensor) module, Aftermarket seat covers or items affecting seat sensing, Loose or corroded connector at the seat harness, System needs recalibration after seat or sensor service. The specific cause varies by vehicle.
How much does it cost to fix B1046 on a Jeep?
Published repair estimates on Jeep range from $350 to $1,400 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for B1046 on a different make?
View B1046 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.